#include "dri_beep.h"
#include "dri_led.h"
#include "dri_systick.h"
int main(void)
{
	
	dri_led_init();
	dri_beep_init();
	
	dri_systick_init(168);
	dri_beep_open();
	while(1)
	{
		dri_beep_open();
		dri_systick_ms(500);
		dri_beep_close();
		dri_systick_ms(500);
			
		
	}
}
